PDF malware analysis — malicious · 4c8623a56b0487cb

MALICIOUS

PDF

46.3 KB Created: 2021-06-09 14:53:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: c497fe0be73ad2f5f2b3fc7dbbf619fe SHA-1: 35bd8fae0855332aa9ba1e67d4e522b333b95339 SHA-256: 4c8623a56b0487cb1d9368a505f3d4f4bf65b17f59acf46bf660486411173216

100 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link pointing to a site offering game hacks. The document body, though heavily obfuscated, contains similar URLs. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9832

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://netcdn.tw/app/431946152/da-hood-hacks-roblox-site-v3rmillion.net-game-hack In PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/earn-robux-by-watching-ads_GM431946152.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/roblox-exploit-download_GM431946152.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/coin-spin-link_GM406889139.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/free-robux-generator_GM431946152.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/minecraft-login-free_GM479516143.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/free-coins-coin-master-link-today_GM406889139.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/roblox-script-hacks_GM431946152.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/daily-coin-master-free-spin-link-facebook_GM406889139.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/como-hack-coin-master_GM406889139.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/coin-master-invite-friends-free-spins_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off0000543c.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x543C	25900 bytes
SHA-256: `777604c80c8d9ffdf86fab531728ddf7127754c57748b9b2552eb16b341ba9e0`
`font_01_sfnt_off00008f0c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F0C	19384 bytes
SHA-256: `950bc8a3189bdb8c5be682765e1bc9e8fe74dd78cef1eafafbb29b2a74e1ed3a`

Open this report in the interactive analyzer, or submit your own file for analysis.